op 	 {
  name: "Variable"
  output_arg {
    name: "ref"
    type_attr: "dtype"
    is_ref: true
  }
  attr {
    name: "shape"
    type: "shape"
  }
  attr {
    name: "dtype"
    type: "type"
  }
  attr {
    name: "container"
    type: "string"
    default_value {
      s: ""
    }
  }
  attr {
    name: "shared_name"
    type: "string"
    default_value {
      s: ""
    }
  }
  is_stateful: true
}
